The Scientific World Journal / 2014 / Article / Tab 2

Research Article

Numerical Investigation of Heat Transfer Enhancement in a Rectangular Heated Pipe for Turbulent Nanofluid

Table 2

Comparison between the computed data of Nusselt numbers and the data from two benchmarks at different concentrations for SiO2/water.

SiO2/water, Re = 15000
ConcentrationNu (simulation)Nu (Dittus-Boelter)Nu (Gnielinski)Discrepancy between simulation and Gnielinski

1%134.71112.83117.9712.43%
2%138.26116.61121.7611.93%
3%142.64121.42126.5511.28%
4%149.27127.47132.5011.23%
5%157.19135.32140.1310.85%